EP 1400842 A1 20040324 - Method for three-dimensional measurement and imaging having focus-related convergence compensation
Title (en)
Method for three-dimensional measurement and imaging having focus-related convergence compensation
Title (de)
Methode zur drei-dimensionalen Messung und Abbildung mit focus-bezogener Konvergenz-Kompensation
Title (fr)
Méthode pour mesure et imagerie tri-dimensionelle ayant une compensation de convergence liée à la focalisation
Publication
Application
Priority
- EP 97303820 A 19970604
- US 65916496 A 19960605
Abstract (en)
A method of measuring the position of a subject in three dimensions from a left and a right image produced by an apparatus for creation of three-dimensional images using a single lens (4), having a right and a left outer mirror (12) facing outward toward the subject, the outer mirrors being pivotable simultaneously and oppositely about a vertical axis, such that the outer mirrors are adjusted to converge at an angle of convergence related to the lens, the method comprising the steps of: a) calibrating the apparatus with a plurality of targets having a plurality of measurement points at known position in three dimensions, resulting in a plurality of calibration maps, each map being indexed by angle of convergence and each comprising a plurality of two dimensional coordinates representing the position of the measurement points on the target in each of the left and right images, and a plurality of coordinates representing the actual position of the measurement points on the target in three dimensions; b) aiming the apparatus on the subject, simultaneously converging the outer mirrors so as to maximize the overlap of the images; c) measuring the angle of convergence of the outer mirrors; d) selecting the calibration map most closely matching the measured angle of convergence; e) measuring the two-dimensional position of the subject in each of the left and right images; and f) Using the measured two dimensional positions of the subject in the left and light images, determining the actual position of the subject in three dimensions from the selected calibration map. <IMAGE>
IPC 1-7
IPC 8 full level
G01C 3/06 (2006.01); G01C 11/06 (2006.01); G02B 27/22 (2006.01); G03B 35/10 (2006.01); H04N 13/00 (2006.01); H04N 13/02 (2006.01); G01C 11/00 (2006.01)
CPC (source: EP US)
G01C 11/06 (2013.01 - EP US); G03B 35/10 (2013.01 - EP US); H04N 13/211 (2018.05 - EP US); H04N 13/218 (2018.05 - EP US); H04N 13/239 (2018.05 - EP US); H04N 13/246 (2018.05 - EP US); H04N 13/296 (2018.05 - EP US); H04N 13/189 (2018.05 - EP US)
Citation (search report)
- [A] US 4751570 A 19880614 - ROBINSON MAX [GB]
- [A] GB 2226923 A 19900711 - TOH PENG SENG, et al
Designated contracting state (EPC)
CH DE FR GB LI NL SE
DOCDB simple family (publication)
EP 0811876 A1 19971210; EP 0811876 B1 20041103; DE 69731428 D1 20041209; EP 1400841 A1 20040324; EP 1400842 A1 20040324; US 5828913 A 19981027; US 5883662 A 19990316
DOCDB simple family (application)
EP 97303820 A 19970604; DE 69731428 T 19970604; EP 03024167 A 19970604; EP 03024171 A 19970604; US 65916496 A 19960605; US 71123796 A 19960909